Documentation
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Overview ¶
Package options contains all of the primary arguments for a kubelet.
Index ¶
- func AddGlobalFlags(fs *pflag.FlagSet)
- func AddKubeletConfigFlags(mainfs *pflag.FlagSet, c *kubeletconfig.KubeletConfiguration)
- func NewContainerRuntimeOptions() *config.ContainerRuntimeOptions
- func NewKubeletConfiguration() (*kubeletconfig.KubeletConfiguration, error)
- func ValidateKubeletFlags(f *KubeletFlags) error
- func ValidateKubeletServer(s *KubeletServer) error
- type KubeletFlags
- type KubeletServer
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func AddGlobalFlags ¶ added in v1.10.0
AddGlobalFlags explicitly registers flags that libraries (glog, verflag, etc.) register against the global flagsets from "flag" and "github.com/spf13/pflag". We do this in order to prevent unwanted flags from leaking into the Kubelet's flagset.
func AddKubeletConfigFlags ¶ added in v1.8.0
func AddKubeletConfigFlags(mainfs *pflag.FlagSet, c *kubeletconfig.KubeletConfiguration)
AddKubeletConfigFlags adds flags for a specific kubeletconfig.KubeletConfiguration to the specified FlagSet
func NewContainerRuntimeOptions ¶ added in v1.7.0
func NewContainerRuntimeOptions() *config.ContainerRuntimeOptions
NewContainerRuntimeOptions will create a new ContainerRuntimeOptions with default values.
func NewKubeletConfiguration ¶ added in v1.8.0
func NewKubeletConfiguration() (*kubeletconfig.KubeletConfiguration, error)
NewKubeletConfiguration will create a new KubeletConfiguration with default values
func ValidateKubeletFlags ¶ added in v1.8.0
func ValidateKubeletFlags(f *KubeletFlags) error
func ValidateKubeletServer ¶ added in v1.8.0
func ValidateKubeletServer(s *KubeletServer) error
validateKubeletServer validates configuration of KubeletServer and returns an error if the input configuration is invalid
Types ¶
type KubeletFlags ¶ added in v1.7.0
type KubeletFlags struct {
KubeConfig string
BootstrapKubeconfig string
// Insert a probability of random errors during calls to the master.
ChaosChance float64
// Crash immediately, rather than eating panics.
ReallyCrashForTesting bool
// TODO(mtaufen): It is increasingly looking like nobody actually uses the
// Kubelet's runonce mode anymore, so it may be a candidate
// for deprecation and removal.
// If runOnce is true, the Kubelet will check the API server once for pods,
// run those in addition to the pods specified by static pod files, and exit.
RunOnce bool
// enableServer enables the Kubelet's server
EnableServer bool
// HostnameOverride is the hostname used to identify the kubelet instead
// of the actual hostname.
HostnameOverride string
// NodeIP is IP address of the node.
// If set, kubelet will use this IP address for the node.
NodeIP string
// This flag, if set, sets the unique id of the instance that an external provider (i.e. cloudprovider)
// can use to identify a specific node
ProviderID string
// Container-runtime-specific options.
config.ContainerRuntimeOptions
// certDirectory is the directory where the TLS certs are located (by
// default /var/run/kubernetes). If tlsCertFile and tlsPrivateKeyFile
// are provided, this flag will be ignored.
CertDirectory string
// cloudProvider is the provider for cloud services.
// +optional
CloudProvider string
// cloudConfigFile is the path to the cloud provider configuration file.
// +optional
CloudConfigFile string
// rootDirectory is the directory path to place kubelet files (volume
// mounts,etc).
RootDirectory string
// The Kubelet will use this directory for checkpointing downloaded configurations and tracking configuration health.
// The Kubelet will create this directory if it does not already exist.
// The path may be absolute or relative; relative paths are under the Kubelet's current working directory.
// Providing this flag enables dynamic kubelet configuration.
// To use this flag, the DynamicKubeletConfig feature gate must be enabled.
DynamicConfigDir flag.StringFlag
// The Kubelet will load its initial configuration from this file.
// The path may be absolute or relative; relative paths are under the Kubelet's current working directory.
// Omit this flag to use the combination of built-in default configuration values and flags.
KubeletConfigFile string
// registerNode enables automatic registration with the apiserver.
RegisterNode bool
// registerWithTaints are an array of taints to add to a node object when
// the kubelet registers itself. This only takes effect when registerNode
// is true and upon the initial registration of the node.
RegisterWithTaints []core.Taint
// cAdvisorPort is the port of the localhost cAdvisor endpoint (set to 0 to disable)
CAdvisorPort int32
// WindowsService should be set to true if kubelet is running as a service on Windows.
// Its corresponding flag only gets registered in Windows builds.
WindowsService bool
// EXPERIMENTAL FLAGS
// Whitelist of unsafe sysctls or sysctl patterns (ending in *).
// +optional
AllowedUnsafeSysctls []string
// containerized should be set to true if kubelet is running in a container.
Containerized bool
// remoteRuntimeEndpoint is the endpoint of remote runtime service
RemoteRuntimeEndpoint string
// remoteImageEndpoint is the endpoint of remote image service
RemoteImageEndpoint string
// experimentalMounterPath is the path of mounter binary. Leave empty to use the default mount path
ExperimentalMounterPath string
// If enabled, the kubelet will integrate with the kernel memcg notification to determine if memory eviction thresholds are crossed rather than polling.
// +optional
ExperimentalKernelMemcgNotification bool
// This flag, if set, enables a check prior to mount operations to verify that the required components
// (binaries, etc.) to mount the volume are available on the underlying node. If the check is enabled
// and fails the mount operation fails.
ExperimentalCheckNodeCapabilitiesBeforeMount bool
// This flag, if set, will avoid including `EvictionHard` limits while computing Node Allocatable.
// Refer to [Node Allocatable](https://git.k8s.io/community/contributors/design-proposals/node-allocatable.md) doc for more information.
ExperimentalNodeAllocatableIgnoreEvictionThreshold bool
// Node Labels are the node labels to add when registering the node in the cluster
NodeLabels map[string]string
// volumePluginDir is the full path of the directory in which to search
// for additional third party volume plugins
VolumePluginDir string
// lockFilePath is the path that kubelet will use to as a lock file.
// It uses this file as a lock to synchronize with other kubelet processes
// that may be running.
LockFilePath string
// ExitOnLockContention is a flag that signifies to the kubelet that it is running
// in "bootstrap" mode. This requires that 'LockFilePath' has been set.
// This will cause the kubelet to listen to inotify events on the lock file,
// releasing it and exiting when another process tries to open that file.
ExitOnLockContention bool
// seccompProfileRoot is the directory path for seccomp profiles.
SeccompProfileRoot string
// bootstrapCheckpointPath is the path to the directory containing pod checkpoints to
// run on restore
BootstrapCheckpointPath string
// NodeStatusMaxImages caps the number of images reported in Node.Status.Images.
// This is an experimental, short-term flag to help with node scalability.
NodeStatusMaxImages int32
// DEPRECATED FLAGS
// minimumGCAge is the minimum age for a finished container before it is
// garbage collected.
MinimumGCAge metav1.Duration
// maxPerPodContainerCount is the maximum number of old instances to
// retain per container. Each container takes up some disk space.
MaxPerPodContainerCount int32
// maxContainerCount is the maximum number of old instances of containers
// to retain globally. Each container takes up some disk space.
MaxContainerCount int32
// masterServiceNamespace is The namespace from which the kubernetes
// master services should be injected into pods.
MasterServiceNamespace string
// registerSchedulable tells the kubelet to register the node as
// schedulable. Won't have any effect if register-node is false.
// DEPRECATED: use registerWithTaints instead
RegisterSchedulable bool
// nonMasqueradeCIDR configures masquerading: traffic to IPs outside this range will use IP masquerade.
NonMasqueradeCIDR string
// This flag, if set, instructs the kubelet to keep volumes from terminated pods mounted to the node.
// This can be useful for debugging volume related issues.
KeepTerminatedPodVolumes bool
// allowPrivileged enables containers to request privileged mode.
// Defaults to true.
AllowPrivileged bool
// hostNetworkSources is a comma-separated list of sources from which the
// Kubelet allows pods to use of host network. Defaults to "*". Valid
// options are "file", "http", "api", and "*" (all sources).
HostNetworkSources []string
// hostPIDSources is a comma-separated list of sources from which the
// Kubelet allows pods to use the host pid namespace. Defaults to "*".
HostPIDSources []string
// hostIPCSources is a comma-separated list of sources from which the
// Kubelet allows pods to use the host ipc namespace. Defaults to "*".
HostIPCSources []string
}
A configuration field should go in KubeletFlags instead of KubeletConfiguration if any of these are true:
- its value will never, or cannot safely be changed during the lifetime of a node
- its value cannot be safely shared between nodes at the same time (e.g. a hostname) KubeletConfiguration is intended to be shared between nodes
In general, please try to avoid adding flags or configuration fields, we already have a confusingly large amount of them.
func NewKubeletFlags ¶ added in v1.8.0
func NewKubeletFlags() *KubeletFlags
NewKubeletFlags will create a new KubeletFlags with default values
func (*KubeletFlags) AddFlags ¶ added in v1.7.0
func (f *KubeletFlags) AddFlags(mainfs *pflag.FlagSet)
AddFlags adds flags for a specific KubeletFlags to the specified FlagSet
type KubeletServer ¶
type KubeletServer struct {
KubeletFlags
kubeletconfig.KubeletConfiguration
}
KubeletServer encapsulates all of the parameters necessary for starting up a kubelet. These can either be set via command line or directly.
func NewKubeletServer ¶
func NewKubeletServer() (*KubeletServer, error)
NewKubeletServer will create a new KubeletServer with default values.
func (*KubeletServer) AddFlags ¶
func (s *KubeletServer) AddFlags(fs *pflag.FlagSet)
AddFlags adds flags for a specific KubeletServer to the specified FlagSet
Source Files
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